12000212122112 has 20 divisors (see below), whose sum is σ = 23976986330946. Its totient is φ = 6000106060800.

The previous prime is 12000212122111. The next prime is 12000212122117. The reversal of 12000212122112 is 21122121200021.

It can be written as a sum of positive squares in only one way, i.e., 8006545613056 + 3993666509056 = 2829584^2 + 1998416^2 .

It is not an unprimeable number, because it can be changed into a prime (12000212122111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11718956639 + ... + 11718957662.

Almost surely, 2^{12000212122112} is an apocalyptic number.

It is an amenable number.

12000212122112 is a deficient number, since it is larger than the sum of its proper divisors (11976774208834).

12000212122112 is an frugal number, since it uses more digits than its factorization.

12000212122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23437914319 (or 23437914303 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12000212122112 its reverse (21122121200021), we get a palindrome (33122333322133).

The spelling of 12000212122112 in words is "twelve trillion, two hundred twelve million, one hundred twenty-two thousand, one hundred twelve".